题目内容

能简算的要简算
12
13
×
3
7
+
4
7
×
12
13
+
12
13
9.6-11÷7+
1
7
×4
34÷[8
1
3
-(6
3
5
+5
2
5
÷9)]
[9-(
1
12
+
1
8
)×24]÷1
3
5
12
13
×
3
7
+
4
7
×
12
13
+
12
13

=(
3
7
+
4
7
+1)×
12
13

=2×
12
13

=1
11
13


②9.6-11÷7+
1
7
×4,
=9.6-(
11
7
-
4
7
),
=9.6-1,
=8.6;

③34÷[8
1
3
-(6
3
5
+5
2
5
÷9)],
=34÷[8
1
3
-(6
3
5
+
27
5
×
1
9
)],
=34÷[8
1
3
-(6
3
5
+
3
5
)],
=34÷[8
1
3
-7
1
5
],
=34÷
17
15

=30;

④[9-(
1
12
+
1
8
)×24]÷1
3
5

=[9-(
1
12
+
1
8
)×24]÷1
3
5

=[9-(24×
1
12
+
24×
1
8
)]÷1
3
5

=[9-(2+3)]÷1
3
5

=[9-5]÷1
3
5
=4×
5
8

=2
1
2
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网